html,body{
    height: 100%;
    background-color:#f9f9f9;
}
.header{
    position: fixed;
    z-index: 10;
    width:7.5rem;
    height:0.8rem;
    background:#000;
    color:#fff;
    line-height:.8rem;
    text-align:left;
}
.header .iconfont{
    display: inline-block;
    width:0.8rem;
    height:0.8rem;
    text-align: center;
    font-size:.4rem;
}
.header .back{
    float:left;
    font-size:.6rem;
}
.header .about{
    float:right;
}
.content{
    width: 7.5rem;
}
.content ul{
    padding-top:1.2rem;
    padding-bottom:1.7rem;
    width: 7.5rem;
}
.content li{
    position: relative;
    width:6.5rem;
    margin:0 auto;
    padding-top:0.7rem;
    font-size: 0;
    
}
.content a {
    display: block;
    color:#fff;
}
.content a img{
    width:100%;
    height:2.7rem;
}
.content a .title{
    position: absolute;
    top:3rem;
    left:50%;
    transform: translateX(-50%);
    width:6.2rem;
    height:0.9rem;
    line-height: 0.9rem;
    text-align: center;
    background-color:rgba(0,0,0,.3);
    font-size:0.28rem;
}
.content a .description{
    padding:0.6rem 0.4rem;
    font-size:0.26rem;
    color:#333;
    background-color: #fff;
}
.footer{
    position: fixed;
    bottom: 0;
    left:0;
    z-index: 20;
    width:7.5rem;
    height:1rem;
    display:flex;
    -webkit-display:flex;
    justify-content: space-around;
    line-height: 1rem;
    text-align: center;
    font-size:0.32rem;
    background-color: #fff;
    border-top:.02rem solid #ccc;
}
.footer>li{
    position: relative;
    flex:2;
    border-right:1px solid #ccc;
    background:#fff;
}
.footer a{
    color:#000;
    display:inline-block;
    width:100%;
    height:100%;
}
.footer>li ul{
    display:none;
    width:100%;
    height:2.7rem;
    position: absolute;
    z-index: 10;
    top:-2.7rem;
    left:0;
    background-color: #fff;
}
.footer .toggle{
    flex:1;
}
.footer>li ul li{
    height:0.88rem;
    border-bottom:.02rem solid #ddd;
}
